Spring plate assembly and elevator brake

Abstract

The utility model provides a spring plate assembly and an elevator brake, and relates to the technical field of elevators, according to the spring plate assembly provided by the utility model, a first base is connected with a spring plate body, the first base and a second base are oppositely arranged, the first base is connected to one end of a threaded connecting piece, and the second base is connected to the other end of the threaded connecting piece; the second base is connected to the other end of the threaded connecting piece, and the distance between the first base and the second base is adjusted through the threaded connecting piece. The first base and the second base are both sleeved with the first sleeve body. The outer diameter of the first sleeve body, the inner diameter of the first base and the inner diameter of the second base are gradually increased in the direction from the two ends of the threaded connecting piece to the middle. The threaded connecting piece can tension the first base and the second base in the axial direction, then the first sleeve body is crushed to be shrunk in the radial direction, the first sleeve body forms uniform radial pressing force, a larger braking load can be borne when a main shaft inserted into the first sleeve body is locked, the structure is reliable, and better dynamic balance performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a spring disc assembly and an elevator brake. Background Art

[0002] Elevator braking usually requires fixing the friction disc to the main shaft of the main machine (traction machine main shaft), and then braking the main shaft of the main machine by rotating the brake friction disc. Taking patent document CN116143014A as an example, the throat clamp is tightened by screws to shrink the opening of the side wall of the throat clamp, thereby reducing the inner diameter of the throat clamp, and the main shaft is clamped by radial contraction of the throat clamp. Since the tightening of the throat clamp by the screw is limited to a local position in the circumference, the clamping force on the main shaft is unevenly distributed, and the throat clamp is easily damaged due to stress concentration. In addition, the throat clamp and screws will cause uneven circumferential weight, and even due to insufficient clamping force of the throat clamp, it is necessary to add a flat key for positioning, which not only increases the cost, but also affects the dynamic balance of the equipment. Utility Model Content

[0003] The utility model aims to provide a spring disc assembly and an elevator brake to alleviate the technical problems in the prior art that the radial contraction pressing force of the spring disc assembly is unevenly distributed in the circumferential direction and the ability to withstand braking load is low.

[0004] In a first aspect, the spring disk assembly provided by the utility model comprises: a first base, a second base, a threaded connector, a first sleeve and a spring disk body;

[0005] The first base is connected to the spring disk body;

[0006] The first base and the second base are arranged opposite to each other, the first base is connected to one end of the threaded connector, the second base is connected to the other end of the threaded connector, and the threaded connector is used to adjust the distance between the first base and the second base;

[0007] The first base and the second base are both sleeved with the first sleeve, and the first base and the second base are respectively attached to the outer wall surface of the first sleeve;

[0008] In a direction from both ends of the threaded connector to the middle, the outer diameter of the first sleeve increases gradually, and / or the inner diameters of the first base and the second base increase gradually respectively.

[0009] In combination with the first aspect, the utility model provides a first possible implementation manner of the first aspect, wherein the side wall of the first sleeve is provided with a first through groove penetrating along the axial direction.

[0010] In combination with the first aspect, the utility model provides a second possible implementation of the first aspect, wherein a second sleeve is sleeved on the outer sides of the first base and the second base;

[0011] In a direction from two ends of the threaded connector to the middle, the inner diameter of the second sleeve decreases, and / or the outer diameters of the first base and the second base decrease respectively.

[0012] In combination with the second possible implementation of the first aspect, the utility model provides a third possible implementation of the first aspect, wherein a sleeve is sleeved on the outer side of the second sleeve body.

[0013] In combination with the second possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the outer ring of the first base is provided with a first protrusion, the outer ring of the second base is provided with a second protrusion, and the second sleeve is located between the first protrusion and the second protrusion.

[0014] In combination with the second possible implementation of the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein the side wall of the second sleeve is provided with a second through groove penetrating along the axial direction.

[0015] In combination with the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein the inner ring of the first base is provided with a third protrusion, the inner ring of the second base is provided with a fourth protrusion, and the first sleeve is located between the third protrusion and the fourth protrusion.

[0016] In combination with the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein the spring disk body is provided with a plurality of holes, the plurality of holes are arranged at intervals along the circumference of the spring disk body, and the plurality of holes are used to cooperate with the friction disk.

[0017] In combination with the first aspect, the utility model provides an eighth possible implementation of the first aspect, wherein the spring disk body is provided with a plurality of hollow grooves, the plurality of hollow grooves are arranged at intervals along the circumference of the spring disk body, and a rib is formed between any two adjacent hollow grooves.

[0018] In combination with the eighth possible implementation of the first aspect, the utility model provides a ninth possible implementation of the first aspect, wherein the size of the rib in the circumferential direction of the spring disk body decreases from the end close to the axis of the spring disk body to the end away from the axis.

[0019] In a second aspect, the elevator brake provided by the utility model comprises: a friction disc and the spring disc assembly described in the first aspect;

[0020] The friction disc is connected to the spring disc body, and the first sleeve is sleeved on the main shaft of the main machine.

[0021] The embodiments of the utility model bring the following beneficial effects: the first base is connected to the spring disk body, the first base and the second base are arranged opposite to each other, the first base is connected to one end of the threaded connector, the second base is connected to the other end of the threaded connector, and the distance between the first base and the second base is adjusted by the threaded connector, the first base and the second base are both sleeved with the first sleeve, and the first base and the second base are respectively fitted on the outer wall surface of the first sleeve, and the outer diameter of the first sleeve increases in the direction from the two ends of the threaded connector to the middle, and / or the inner diameter of the first base and the inner diameter of the second base increases respectively, the first base and the second base can be axially tightened by the threaded connector, and then the radial contraction of the first sleeve can be crushed, and a uniform radial clamping force can be formed along the circumference of the first sleeve, and when the main shaft inserted in the first sleeve is locked, a larger braking load can be withstood, the structure is more reliable, and has better dynamic balancing performance.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A cross-sectional view of a spring disc assembly and a friction disc provided in an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A partial enlarged schematic diagram of position A in the middle;

[0026] Figure 3 A schematic diagram of a first sleeve of a spring disc assembly provided in an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of a second sleeve of a spring disc assembly provided in an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of a spring disk body of a spring disk assembly provided in an embodiment of the utility model.

[0029] Icons: 001 - first base; 101 - first protrusion; 102 - third protrusion; 002 - second base; 201 - second protrusion; 202 - fourth protrusion; 003 - threaded connector; 004 - first sleeve; 401 - first through groove; 005 - spring disc body; 501 - hole; 502 - hollow groove; 503 - rib; 006 - second sleeve; 601 - second through groove; 007 - sleeve; 008 - friction disc. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. The physical quantities in the formula, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1 and Figure 2As shown, the spring disk assembly provided by the embodiment of the utility model includes: a first base 001, a second base 002, a threaded connector 003, a first sleeve 004 and a spring disk body 005; the first base 001 is connected to the spring disk body 005; the first base 001 and the second base 002 are arranged opposite to each other, the first base 001 is connected to one end of the threaded connector 003, the second base 002 is connected to the other end of the threaded connector 003, and the threaded connector 003 is used to adjust the distance between the first base 001 and the second base 002; the first base 001 and the second base 002 are both sleeved with the first sleeve 004, and the first base 001 and the second base 002 are respectively attached to the outer wall surface of the first sleeve 004; in the direction from the two ends of the threaded connector 003 to the middle, the outer diameter of the first sleeve 004 increases, and / or the inner diameter of the first base 001 and the inner diameter of the second base 002 increase respectively.

[0034] In an optional embodiment, the outer diameter of the first sleeve 004 increases in the direction from the two ends of the threaded connector 003 to the middle; in another optional embodiment, the inner diameter of the first base 001 and the inner diameter of the second base 002 increase in the direction from the two ends of the threaded connector 003 to the middle. In combination with the above embodiment, in the direction from the two ends of the threaded connector 003 to the middle, not only the outer diameter of the first sleeve 004 increases, but also the inner diameter of the first base 001 and the inner diameter of the second base 002 increase.

[0035] When the threaded connector 003 is locked, the first base 001 and the second base 002 are tightened, thereby reducing the distance between the first base 001 and the second base 002, and the inner walls of the first base 001 and the second base 002 radially press the first sleeve 004, which can break the radial contraction of the first sleeve 004, and the inner diameter of the first sleeve 004 is reduced, so that the main shaft of the main machine inserted therein can be clamped, and the radial clamping force is evenly distributed along the circumferential direction, the structure is more reliable, and can withstand a larger braking load, and the weight of the spring disk assembly is more evenly distributed along the circumferential direction, with better dynamic balancing performance.

[0036] like Figure 1 and Figure 3 As shown, in the embodiment of the utility model, the side wall of the first sleeve 004 is provided with a first through groove 401 penetrating in the axial direction. When the first base 001 and the second base 002 radially squeeze the first sleeve 004, the first through groove 401 is crushed and contracted, thereby reducing the radial dimension of the first sleeve 004. The first through groove 401 is provided to expand the range of variation of the radial dimension of the first sleeve 004.

[0037] like Figure 1 and Figure 2As shown, the outer sides of the first base 001 and the second base 002 are sleeved with a second sleeve 006. In one embodiment, the inner diameter of the second sleeve 006 decreases in the direction from the two ends of the threaded connector 003 to the middle; in another embodiment, the outer diameter of the first base 001 and the outer diameter of the second base 002 decrease in the direction from the two ends of the threaded connector 003 to the middle. It is also possible to combine the above two embodiments, in the direction from the two ends of the threaded connector 003 to the middle, not only the inner diameter of the second sleeve 006 decreases, but also the outer diameter of the first base 001 and the outer diameter of the second base 002 decrease. When the first base 001 and the second base 002 are tightened by the threaded connector 003, the first base 001 and the second base 002 squeeze the second sleeve 006 outward, so that the second sleeve 006 tends to expand radially. Since the shape of the second sleeve 006 itself tends to be stable, the reaction force of the second sleeve 006 acting on the first base 001 and the second base 002 can crush the first base 001 and the second base 002, ensuring that the radial dimensions of the first base 001 and the second base 002 tend to be stable.

[0038] In addition, a sleeve 007 may be sleeved on the outer side of the second sleeve 006 to limit the radial expansion of the second sleeve 006 , thereby concentrating the radial crushing force inward, thereby increasing the extrusion force of the radial contraction of the first sleeve 004 .

[0039] See also Figure 2 The outer ring of the first base 001 is provided with a first protrusion 101, the outer ring of the second base 002 is provided with a second protrusion 201, and the second sleeve 006 is located between the first protrusion 101 and the second protrusion 201, which can prevent the second sleeve 006 from falling off the first base 001 and the second base 002 during assembly.

[0040] like Figure 1 and Figure 4 As shown, the side wall of the second sleeve 006 is provided with a second through groove 601 which penetrates axially. The radial dimension variation range of the second sleeve 006 can be increased by providing the second through groove 601. By expanding the radial dimension of the second sleeve 006, it is convenient to sleeve it on the first base 001 and the second base 002.

[0041] See also Figure 2 The inner circle of the first base 001 is provided with a third protrusion 102, the inner circle of the second base 002 is provided with a fourth protrusion 202, and the first sleeve 004 is located between the third protrusion 102 and the fourth protrusion 202. During assembly, the first sleeve 004 is limited between the third protrusion 102 and the fourth protrusion 202 to prevent the first sleeve 004 from being loosened from the inside of the first base 001 and the second base 002.

[0042] like Figure 1 and Figure 5As shown, the spring disk body 005 is provided with a plurality of holes 501 , and the plurality of holes 501 are arranged at intervals along the circumference of the spring disk body 005 , and the plurality of holes 501 are used to cooperate with the friction disk 008 .

[0043] In an optional embodiment, the friction disc 008 can be die-formed on both sides of the spring disc body 005, and the friction disc 008 can be embedded in the plurality of holes 501, thereby improving the bonding strength between the friction disc 008 and the spring disc body 005, and improving the shear (circumferential torsion) strength of the friction disc 008 relative to the spring disc body 005. In addition, the connection between the friction disc 008 and the spring disc body 005 can be reinforced by bonding.

[0044] Furthermore, the spring disk body 005 is provided with a plurality of hollow grooves 502, which are arranged at intervals along the circumference of the spring disk body 005, and a rib 503 is formed between any two adjacent hollow grooves 502. The plurality of hollow grooves 502 can reduce the weight of the spring disk body 005 and reduce the force required for the spring disk body 005 to deform in the axial direction.

[0045] In an optional embodiment, the size of the rib 503 in the circumferential direction of the spring disk body 005 decreases from the end close to the axis of the spring disk body 005 to the end away from the axis. In other words, the rib 503 gradually narrows from the end close to the axis of the spring disk body 005 to the end away from the axis. The position close to the axis can withstand greater shear stress and the structural strength distribution is more reasonable.

[0046] The elevator brake provided in the embodiment of the utility model comprises: a friction disc 008 and the spring disc assembly described in the above embodiment; the friction disc 008 is connected to the spring disc body 005, and the first sleeve 004 is sleeved with the main shaft of the main machine. In the embodiment of the utility model, the elevator brake has the technical effect of the above spring disc assembly, which will not be described in detail here.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A spring disk assembly, characterized in that: include: A first base (001), a second base (002), a threaded connector (003), a first sleeve (004) and a spring disc body (005); The first base (001) is connected to the spring disk body (005); The first base (001) and the second base (002) are arranged opposite to each other, the first base (001) is connected to one end of the threaded connector (003), the second base (002) is connected to the other end of the threaded connector (003), and the distance between the first base (001) and the second base (002) is adjusted by the threaded connector (003); The first base (001) and the second base (002) are both sleeved with the first casing (004), and the first base (001) and the second base (002) are respectively attached to the outer wall surface of the first casing (004); In a direction from both ends of the threaded connector (003) toward the middle, the outer diameter of the first sleeve (004) increases gradually, and / or the inner diameters of the first base (001) and the second base (002) increase gradually.

2. The spring disk assembly according to claim 1, characterized in that: The side wall of the first sleeve (004) is provided with a first through groove (401) penetrating along the axial direction.

3. The spring disk assembly according to claim 1, characterized in that: The outer sides of the first base (001) and the second base (002) are sleeved with a second sleeve body (006); From the two ends of the threaded connector (003) toward the middle, the inner diameter of the second sleeve (006) decreases, and / or the outer diameters of the first base (001) and the second base (002) decrease respectively.

4. The spring disk assembly according to claim 3, characterized in that: The outer side of the second sleeve body (006) is sleeved with a sleeve (007).

5. The spring disk assembly according to claim 3, characterized in that: The outer ring of the first base (001) is provided with a first protrusion (101), the outer ring of the second base (002) is provided with a second protrusion (201), and the second sleeve (006) is located between the first protrusion (101) and the second protrusion (201).

6. The spring disk assembly according to claim 3, characterized in that: The side wall of the second sleeve (006) is provided with a second through groove (601) penetrating in the axial direction.

7. The spring disk assembly according to claim 1, characterized in that: The inner ring of the first base (001) is provided with a third protrusion (102), the inner ring of the second base (002) is provided with a fourth protrusion (202), and the first sleeve (004) is located between the third protrusion (102) and the fourth protrusion (202).

8. The spring disk assembly according to claim 1, characterized in that: The spring disk body (005) is provided with a plurality of holes (501), the plurality of holes (501) are arranged at intervals along the circumference of the spring disk body (005), and the plurality of holes (501) are used to cooperate with the friction disk (008).

9. The spring disk assembly according to claim 1, characterized in that: The spring disk body (005) is provided with a plurality of hollow grooves (502), and the plurality of hollow grooves (502) are arranged at intervals along the circumference of the spring disk body (005), and a rib (503) is formed between any two adjacent hollow grooves (502).

10. The spring disk assembly according to claim 9, characterized in that: In the circumferential direction of the spring disk body (005), the size of the rib (503) decreases from an end close to the axis of the spring disk body (005) to an end away from the axis.

11. An elevator brake, characterized in that: include: A friction disc (008) and a spring disc assembly as claimed in any one of claims 1 to 10; The friction disk (008) is connected to the spring disk body (005), and the first sleeve (004) is sleeved on the main shaft of the main machine.

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